I approach writing female characters the same why I approach writing male characters. I never think I'm writing about women, I think I'm writing about one woman, one person. And I try to imagine what she is like, and endow her with a lot of my own thoughts and history.
I would say that social work began in my mind in the Unitarian Church when I was ten or twelve years old, and I started to do things that I thought would help other people.